Condition Analysis
AI-powered assessment using site data and 14-day weather history
Back Bowden Doors has had only one full dry day since 10mm of rain on August 19th, followed by further showers on the 20th, 21st, 22nd, and 25th, and the sheltered valley position with high humidity (89% today, near-saturation overnight) has severely limited drying. With heavy rain forecast from tomorrow (9.7mm, then 15.6mm), conditions are about to deteriorate significantly and the rock cannot be considered reliably dry today.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The sheltered valley position and partial tree cover at Back Bowden Doors dramatically slows drying compared to the exposed hilltop at Bowden Doors proper — expect this crag to need 50–100% longer drying time than guidelines suggest.
- The powerful roof problems and overhanging sections are known to weep from above after rain, with seepage persisting well after the rock face itself appears dry.
- The west-facing aspect only receives afternoon and evening sun, limiting solar drying — combined with the easterly wind today (blocked by the crag itself on a W-facing wall), effective drying is minimal.
- The crag is within an SSSI with some of the finest Fell Sandstone exposures in northern England — any moisture damage to holds is both a climbing loss and an environmental one; seasonal bird nesting restrictions may also still apply in late August.
Warnings
3
- Heavy rain of 25+ mm is forecast over the next two days (Aug 27–28), which will fully re-saturate the rock and reset any drying progress.
- The roof problems at Back Bowden Doors are known to weep from above after rain — even if the face appears dry, water may be present on key holds beneath overhangs.
- Climbing on damp Fell Sandstone causes permanent, irreversible damage to holds — this SSSI-designated crag is irreplaceable.
Reasoning
The last significant rain was 10mm on August 19th, with additional showers on the 20th (3.1mm), 21st (0.1mm), 22nd (0.1mm), and 25th (1.1mm), giving only one truly dry day before today — insufficient for a sheltered Fell Sandstone crag to dry internally.
Despite today being dry, the easterly wind offers minimal benefit to this west-facing crag, overnight humidity has been 92–97%, and average humidity over the last week is 80% — effective drying has been very poor since the last rain.
With 42mm of rain in the last 28 days and repeated wetting-drying cycles, the porous Fell Sandstone is likely still carrying significant internal moisture, creating real risk of hold breakage especially on the iron-oxide-cemented features climbers depend on.
Late August in Northumberland can offer good conditions, but this particular spell has been cool (12.9°C average) and humid, limiting the summer drying advantage; bird nesting restrictions may still be in effect.
Contributing Factors
7
10mm on Aug 19, 3.1mm on Aug 20, and 1.1mm on Aug 25 mean the rock has been repeatedly re-wetted with only short gaps, never allowing full internal drying.
The wooded, sheltered setting drastically reduces airflow and evaporation compared to exposed crags, meaning drying times are significantly extended beyond standard guidelines.
Today's humidity ranges from 74–97% with overnight saturation near dew point, severely limiting net evaporation from the rock surface.
The prevailing easterly wind today is blocked by the crag itself on the west-facing climbing surface, providing essentially no wind-assisted drying to the routes.
Just one full dry day since the last shower (1.1mm on Aug 25) is well below the minimum 24–48 hours needed even for light rain on an exposed crag, let alone a sheltered one.
Temperatures around 15–19°C provide some evaporative capacity but are not warm enough to compensate for the high humidity and poor airflow at this sheltered site.
9.7mm forecast for Aug 27 and 15.6mm for Aug 28 will completely re-saturate the rock, making today the last possible window before a prolonged wet spell.
Recommendations
3
- Do not climb today — the combination of recent repeated wetting, sheltered position, high humidity, and unfavourable wind direction means the Fell Sandstone is very unlikely to be dry internally.
- Wait for an extended dry spell of at least 3–4 days with lower humidity and favourable winds after the forecast rain clears before considering a visit.
- If visiting the area, consider nearby non-porous alternatives (e.g. Whinstone or dolerite crags) that are less sensitive to moisture.
Previous Analyses
Marginal — Assess Conditions
55%
57 days ago
Two full dry days have elapsed since the last significant rain (10mm on Aug 19, 3.1mm on Aug 20), with today being dry and relatively warm — but the sheltered valley position, high recent humidity, and light drizzle on Aug 21–22 mean internal moisture may linger. Today's afternoon window looks promising if the rock passes a visual and touch test, but rain returns tomorrow and conditions will deteriorate sharply for the rest of the week.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Back Bowden Doors sits in a sheltered wooded valley that receives far less airflow than nearby Bowden Doors proper, significantly extending drying times after any rain.
- The powerful roof problems and overhanging sections can weep from drainage above for days after rain, even when vertical faces appear dry.
- The west-facing aspect means the crag only receives afternoon and evening sun, limiting solar drying — and the sheltered position further reduces the benefit.
- The crag is part of an SSSI with some of the finest Fell Sandstone exposures in northern England; any moisture-related damage to holds is irreversible and ecologically significant.
Warnings
2
- The rock surface may appear dry today while the interior remains damp from repeated saturation over Aug 16–20 — use the ground-moisture test and err on the side of caution.
- Heavy rain (24mm) is forecast for Aug 28; do not visit mid-week as conditions will be clearly unsafe.
Reasoning
The last heavy rain was 10mm on Aug 19 followed by 3.1mm on Aug 20 and traces on Aug 21–22, giving roughly 2 genuinely dry days — borderline for a sheltered Fell Sandstone crag given the preceding wet spell of ~20mm across Aug 16–20.
Two dry days with moderate temperatures (14–19°C) and humidity averaging 74–81% provide some drying, but the sheltered valley position with limited wind penetration and only afternoon sun on the west face means evaporation has been slower than at an exposed or south-facing crag.
The cumulative ~44mm over the past 28 days with multiple wetting cycles means the porous sandstone has been repeatedly saturated; hold breakage risk remains elevated if internal moisture has not fully dissipated, particularly on the roof problems where seepage collects.
Mid-to-late August offers reasonable temperatures for drying but the recent pattern has been cooler and wetter than typical summer, and the forecast shows a very wet week ahead starting tomorrow.
Contributing Factors
7
Two full days without meaningful precipitation since the Aug 19–20 rain event, meeting the minimum community threshold for porous rock in good conditions.
The wooded, sheltered valley position dramatically reduces wind-driven evaporation compared to exposed crags, meaning two dry days here may be equivalent to one day elsewhere.
Approximately 20mm fell across Aug 16–20 in multiple pulses, repeatedly saturating the porous sandstone and extending internal drying time well beyond what a single rain event would require.
Humidity has averaged ~79% over the past week, slowing evaporation significantly and reducing the effectiveness of the two dry days.
Today's forecast shows humidity dropping to 49–52% with temperatures reaching 18–19°C and moderate wind through the afternoon, providing a decent drying window.
Over 32mm of rain is forecast across the next 5 days starting tomorrow, meaning any window for climbing is today only before conditions deteriorate severely.
The signature roof problems are known to weep from above after rain, and the repeated wetting over recent days makes residual seepage on overhanging sections likely.
Recommendations
3
- If visiting today, go in the afternoon (12:00–17:00) when humidity is lowest and carefully inspect all holds — if the ground at the crag base is damp or any seepage is visible on the roofs, do not climb.
- Avoid the roof problems and any routes beneath obvious drainage lines, as these are most likely to retain hidden moisture from the recent wet spell.
- Do not plan to climb at Back Bowden Doors for the rest of this week — heavy rain from Aug 25–29 will re-saturate the rock and a full 48–72+ hour dry window will not materialise until after Aug 30 at the earliest.
Do Not Climb
45%
58 days ago
Back Bowden Doors received 10mm of rain on August 19th followed by lighter showers on the 20th–22nd, and has had only one fully dry day (today) in a sheltered, west-facing valley setting with moderate humidity — insufficient drying time for porous Fell Sandstone. The forecast brings further rain from August 25th onward, so a brief window tomorrow (Aug 24) is possible but uncertain.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The sheltered valley position and wooded surroundings significantly reduce airflow and sun exposure, meaning drying takes considerably longer here than at the exposed hilltop of Bowden Doors proper.
- The powerful roof problems and overhanging sections can weep from above after rain, and water tracking through the rock from the hillside above may persist for days after heavy rain.
- The site is an SSSI with some of the finest Fell Sandstone exposures in northern England — damage from climbing on damp rock is both ecologically and culturally irreversible.
- Seasonal bird nesting restrictions may still be in effect in late August — check the BMC RAD before visiting.
Warnings
2
- Do not climb on any sections that feel cool to the touch or show any colour variation suggesting dampness — the surface can appear dry while the interior remains dangerously saturated.
- Heavy rain is forecast from August 27th (11mm+), which will reset drying completely; any climbing window this week is narrow at best.
Reasoning
The 10mm rain on August 19th, 3.1mm on the 20th, and trace amounts on the 21st–22nd mean the rock has had only about 1.5 genuinely dry days, far short of the 48–72+ hours needed after moderate rain on sheltered porous sandstone.
Wind has been light to moderate (10–20 km/h) from the NW and SW, offering limited benefit to this sheltered west-facing valley; humidity averaging 81% over the last week further retards evaporation.
With only one dry day since the last significant rain, internal moisture levels in the porous Fell Sandstone (up to 20.7% porosity) are likely still elevated, posing a real risk of hold breakage and grain loosening, especially on the iron-oxide-cemented features.
Late August offers reasonable temperatures (13–18°C) for drying but the recent pattern of frequent showers interspersed with brief dry spells has kept cumulative moisture levels high, preventing the rock from fully drying out.
Contributing Factors
6
10mm fell on August 19th with further light rain on the 20th, 21st, and 22nd, creating a persistently moist environment with only one fully dry day since.
The wooded, sheltered valley dramatically reduces airflow and direct sun exposure compared to open crags, significantly prolonging drying time.
Average humidity of 81% over the past seven days severely limits evaporative drying, especially in still valley air.
Temperatures of 13–18°C provide reasonable evaporative energy, though this is partly offset by the sheltered aspect and high humidity.
Today's 13.7 km/h SW wind provides some drying benefit, but the sheltered position means effective wind speed at the crag face is likely much lower.
Nearly 74mm over 28 days with rain on many days means the rock has had little opportunity to fully dry out at depth, raising background saturation levels.
Recommendations
3
- Wait at least another full dry day before considering climbing; tomorrow (Aug 24) may offer the best window but visually inspect the rock and check for damp at the base before committing.
- Avoid the roof problems and lower sections entirely — these are most prone to seepage and retained moisture from above.
- Check the BMC RAD for any active bird nesting restrictions before visiting, and consider the more exposed Bowden Doors proper as an alternative that dries faster.
Do Not Climb
35%
59 days ago
Back Bowden Doors received 10mm of rain on August 19th followed by 3.1mm on August 20th and a trace on the 21st, with only one fully dry day (today) since. Given the sheltered valley position, high recent humidity averaging 81%, and moderate temperatures, the porous Fell Sandstone is very likely still holding internal moisture despite any surface drying.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The sheltered valley position and surrounding woodland dramatically reduce air circulation, meaning drying times here are significantly longer than at the exposed hilltop of Bowden Doors proper — expect at least an extra day or two beyond normal guidelines.
- The powerful roof problems and overhanging sections can weep from seepage above for several days after rain, even when vertical faces appear dry.
- The west-facing aspect only receives afternoon and evening sun, limiting solar drying — combined with the sheltered position this is one of the slower-drying Fell Sandstone venues.
- The recent pattern of repeated wet spells (22.7mm in the last 7 days across multiple events) means the rock has had little chance to fully dry out between soakings, keeping internal saturation elevated.
Warnings
3
- Fell Sandstone loses up to 50% of its compressive strength when wet — climbing on damp rock risks permanent hold breakage and serious injury.
- Surface-dry appearance is misleading: the rock can look climbable while still dangerously saturated internally after only one dry day.
- The roof problems are particularly prone to weeping from above and may remain wet long after the vertical faces appear dry.
Reasoning
With 10mm on August 19th, 3.1mm on August 20th, and only one full dry day since, the rock is almost certainly still significantly saturated internally despite any surface drying.
Only ~36 hours of dry weather have elapsed since the last meaningful rain, with light winds (13–18 km/h), sheltered aspect, and humidity around 72–81% — far short of the 48–72+ hours needed after heavy rain on sheltered porous sandstone.
Internal moisture from the recent repeated rain events (22.7mm over 7 days across multiple episodes) means holds are weakened and at significant risk of breakage, particularly on the iron-oxide-cemented features climbers depend on.
Late summer conditions with moderate temperatures (~15°C) and persistently elevated humidity (81% average over 7 days) are slowing drying compared to peak summer conditions.
Contributing Factors
6
Only one fully dry day has elapsed since 10mm of rain on August 19th and 3.1mm on August 20th, well short of the 48–72+ hour minimum required for heavy rain on sheltered Fell Sandstone.
The wooded, sheltered valley dramatically reduces wind-driven evaporation compared to exposed crags, extending drying time significantly.
Average humidity of 81% over the past week severely limits evaporation rates and keeps the rock holding moisture.
Multiple rain events over the past two weeks (73.8mm over 28 days) have kept the sandstone repeatedly re-saturated with little chance for deep drying between episodes.
Temperatures around 14–16°C are adequate for some evaporation but not warm enough to drive rapid drying in a sheltered, humid setting.
Wind at only 13 km/h from the NW offers minimal drying benefit, especially at this sheltered venue where effective wind speed at the crag face will be much lower.
Recommendations
3
- Do not climb today — the rock has had insufficient drying time since the heavy rain on August 19–20th and is very likely still damp internally.
- If visiting later this week, check the ground at the base of the crag: if it is not sandy-dry, the rock is still too wet to climb.
- Consider the more exposed main Bowden Doors crag instead for marginally better drying, but even there conditions are questionable until at least August 24th with continued dry weather.
Do Not Climb
90%
60 days ago
Back Bowden Doors has received repeated rainfall over the past week (23.8mm in 7 days), including 10mm on August 19th, 3.1mm on August 20th, and 1.2mm today, with zero consecutive dry days. The sheltered valley position, high humidity (81% average), and cool temperatures (13.6°C average) mean the porous Fell Sandstone will be thoroughly saturated internally and conditions are clearly unsuitable for climbing.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The sheltered valley position and surrounding woodland significantly impede air circulation, meaning drying times here are substantially longer than at the exposed hilltop of Bowden Doors proper — expect at least an extra day or two of drying.
- The powerful roof problems are known to weep from above after rain as water percolates through the caprock, and this seepage can persist for days after the last rainfall in sheltered conditions.
- The west-facing aspect receives only afternoon and evening sun, which combined with the valley's sheltered microclimate provides limited solar drying — north-wind days like today offer no direct benefit to a west-facing crag.
- Seasonal bird nesting restrictions may still be in effect in August — check the BMC RAD for current status before visiting.
Warnings
3
- Climbing on saturated Fell Sandstone causes permanent, irreversible damage to holds — the iron oxide features that define routes here cannot be replaced.
- The rock surface may appear dry before the interior has dried sufficiently; do not be deceived by surface appearance alone — check that the ground at the crag base is sandy-dry before climbing.
- Roof problems are particularly prone to weeping from above after sustained rain; seepage may persist for several days even after rain stops.
Reasoning
The rock is almost certainly saturated internally given 10mm of rain on August 19th, 3.1mm on August 20th, and 1.2mm today, with no meaningful drying window — the surface may begin to dry but the interior will retain dangerous levels of moisture.
With zero consecutive dry days, cool temperatures averaging 13.6°C, high humidity at 81%, moderate winds from the north (not hitting the west face directly), and the sheltered valley position, there has been essentially no effective drying since the heavy rain on August 19th.
The cumulative 23.8mm over the past week will have deeply penetrated this porous Fell Sandstone (6.5–20.7% porosity), reducing compressive strength by up to 30–50% and creating serious risk of hold breakage, especially on the iron oxide features climbers rely upon.
Although it is summer, the current spell is unusually cool and wet for August, negating the typical seasonal drying advantage; the repeated wetting cycles over recent weeks have kept the rock in a persistently poor state.
Contributing Factors
6
10mm on Aug 19, 3.1mm on Aug 20, and 1.2mm today mean the rock has had no opportunity to begin drying — zero consecutive dry days.
The wooded, sheltered valley position drastically reduces air movement at the crag face, trapping humid air and prolonging drying times well beyond what exposed crags require.
Average humidity of 81% over the past week severely limits evaporation rates, and at these levels very little net moisture loss occurs from the rock surface.
Average temperatures of only 13.6°C over the past week provide limited thermal energy to drive evaporation from the porous sandstone.
Today's northerly wind does not directly ventilate the west-facing crag, and the west aspect only receives afternoon sun which is insufficient to overcome the current moisture load.
Nearly 75mm over 28 days has kept the sandstone in a persistently wet state with little opportunity for deep drying between rain events.
Recommendations
3
- Do not climb today or in the immediate days ahead — the rock is saturated and climbing risks permanent hold breakage on irreplaceable routes.
- Wait for at least 3 consecutive dry days with humidity below 75% and temperatures above 15°C before considering a visit, and add an extra day compared to guidance for exposed crags given the sheltered setting.
- Check the BMC RAD for any active bird nesting restrictions before planning your visit.
Do Not Climb
95%
61 days ago
Back Bowden Doors received 9.2mm of rain today on top of 10.5mm yesterday, with 29.2mm in the last seven days — the porous Fell Sandstone will be thoroughly saturated. The sheltered valley position and wooded setting mean drying will be exceptionally slow, and further rain is forecast tomorrow.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The sheltered valley position and tree cover dramatically reduce air movement across the rock, meaning drying times here are significantly longer than at the exposed hilltop of Bowden Doors proper.
- The signature roof problems and overhangs are known to weep from above after rain, and with nearly 20mm in the last two days, seepage from the capping soil and vegetation will persist for days.
- The west-facing aspect receives only afternoon and evening sun, which combined with the sheltered setting provides limited solar drying — north-facing sections within the crag will be even worse.
- The recent pattern of repeated wetting events (rain on Aug 4, 6, 9, 16, 17, 18, 19, and 20) means the sandstone has had no opportunity to fully dry out and will be deeply saturated throughout.
Warnings
3
- Climbing on saturated Fell Sandstone risks permanent hold breakage — the iron oxide cemented features that define the routes are irreplaceable once broken.
- The rock surface may appear dry before the interior has dried sufficiently; do not be deceived by surface appearance at this sheltered venue.
- Roof problems that weep from above can remain damp long after vertical faces appear dry — test carefully before committing to overhanging routes.
Reasoning
With 9.2mm today, 10.5mm yesterday, and repeated rain events throughout the past two weeks totalling over 80mm in 28 days, the Fell Sandstone will be saturated well beyond the surface — internal moisture levels are likely at or near the ~87–90% saturation ceiling.
The sheltered valley position with tree cover severely limits wind exposure and solar gain; even with moderate westerly winds forecast, the effective drying at the rock face will be minimal, and the west aspect only captures afternoon sun — drying from today's saturation state will require at minimum 72+ hours of genuinely dry, breezy weather.
At current saturation levels the sandstone will have lost 30–50% of its compressive strength, making the iron-oxide-cemented holds extremely vulnerable to breakage, particularly on the powerful roof problems where high forces are applied to small features.
Late summer conditions with moderate temperatures (13–17°C) are adequate for drying in principle, but the persistent pattern of rain every few days has prevented the rock from ever reaching a safe baseline moisture level this month.
Contributing Factors
7
9.2mm today plus 10.5mm yesterday and 29.2mm over the past week have thoroughly saturated the porous Fell Sandstone.
The wooded, sheltered valley position drastically reduces wind-driven evaporation compared to exposed crags, extending drying times by days.
Rain has fallen on at least eight of the last fourteen days, preventing the sandstone from reaching a dry baseline at any point.
The roof problems are known to weep from above after rain, and the heavy recent precipitation will sustain this seepage for several days.
The west-facing aspect only receives afternoon and evening sun, reducing the total solar drying hours available each day.
3.4mm forecast for August 21st will reset the drying clock before any meaningful progress can be made.
Temperatures of 13–17°C are adequate for summer drying but not warm enough to compensate for the sheltered position and high humidity.
Recommendations
3
- Do not climb at Back Bowden Doors today or for at least the next three days — the rock is saturated and structurally compromised.
- Wait for a minimum of 48–72 hours of dry weather after the last rain (forecast Aug 21) before even considering a visit, and add extra time given the sheltered setting.
- If visiting later in the week, check the ground at the base of the crag: if it is damp rather than sandy-dry, the rock is still unsafe to climb.
Do Not Climb
92%
62 days ago
Back Bowden Doors has received repeated rain over the past few days (6.8mm on Aug 17, 0.7mm on Aug 18, 2.5mm today including a 1.6mm shower this afternoon) with more forecast tomorrow, and the sheltered valley position means drying has been negligible. The porous Fell Sandstone will be saturated internally and climbing today or tomorrow risks both hold breakage and permanent crag damage.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The sheltered wooded valley position dramatically slows drying compared to the exposed hilltop at Bowden Doors proper — expect at least an extra day of drying time beyond normal guidelines.
- The powerful roof problems and overhangs can weep from above for days after rain as water percolates through the rock and drains downward onto climbing surfaces.
- The west-facing aspect receives only afternoon/evening sun, which combined with the sheltered setting and recent high humidity (76% average over 7 days) means evaporation rates are low.
- Seasonal bird nesting restrictions may still be in effect in August — check the BMC RAD before visiting.
Warnings
2
- Climbing on saturated Fell Sandstone causes permanent, irreversible damage to holds — the iron-oxide cemented features that define the routes will not regenerate.
- The rock surface may appear deceptively dry while the interior remains saturated — do not rely on visual inspection alone after only one dry day.
Reasoning
The rock has received approximately 12mm of rain in the last 4 days (6.8mm on Aug 17, 0.7mm on Aug 18, 2.5mm today) with no meaningful dry spell between events, meaning the sandstone is thoroughly saturated internally despite any brief surface drying.
With zero consecutive dry days, sheltered aspect, high humidity (76–86%), and light winds at the crag level, there has been essentially no effective drying — the wetting front from repeated rain events will have penetrated deep into the porous sandstone.
At current saturation levels the Fell Sandstone could be experiencing 30%+ compressive strength loss, making iron-oxide cemented holds highly vulnerable to breakage under climbing loads.
Mid-August is typically a reasonable climbing season, but the recent unsettled spell with frequent showers and above-average humidity has kept conditions persistently poor for this porous rock type.
Contributing Factors
6
Approximately 12mm over the last 4 days with no intervening dry spell means the rock has had no opportunity to begin drying internally.
Today saw 2.5mm including an afternoon shower, and tomorrow's forecast adds another 3.4mm, continually resetting any drying progress.
The wooded sheltered setting significantly reduces airflow across the rock face, drastically slowing evaporative drying compared to exposed crags.
Average humidity of 76% over the past week with today peaking at 96% means the air's capacity to draw moisture from the rock is very limited.
Temperatures around 13–17°C are adequate for some evaporation but not enough to compensate for the sheltered position, high humidity, and ongoing rain.
The west-facing crag only receives afternoon and evening sun, reducing the total solar drying hours, and today's heavy cloud cover negates even that benefit.
Recommendations
3
- Do not climb today or tomorrow — the rock is saturated from repeated recent rain and conditions will worsen before they improve.
- The earliest realistic window is August 22 after two full dry days, but even then visually inspect the rock and check for weeping on the roof problems before committing.
- Check the BMC RAD for any active bird nesting restrictions at Back Bowden Doors before planning a visit.
Do Not Climb
92%
63 days ago
Back Bowden Doors received rain earlier today (4.7mm) on top of recent rain on 16th and 17th August (7.0mm combined), with zero consecutive dry days and more rain forecast for the next five days. The sheltered valley position and porous Fell Sandstone mean the rock is certainly still wet internally and conditions are unsuitable for climbing.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The sheltered valley position and partial woodland canopy significantly reduce airflow and sun exposure, meaning drying takes substantially longer here than at the exposed hilltop of Bowden Doors proper.
- The signature roof problems and large overhangs can weep from above for days after rain as water percolates through the sandstone from the top of the crag.
- Cumulative rainfall over the last 28 days is high at 62.8mm, meaning deeper pore saturation is likely even during the brief dry spells.
- Seasonal bird nesting restrictions may still be in effect in August — check the BMC RAD before visiting.
Warnings
3
- Climbing on wet Fell Sandstone causes permanent, irreversible damage to holds — this site is SSSI-designated and its geological features are nationally important.
- The surface may appear to dry during the afternoon breeze but internal saturation remains dangerously high — do not be deceived by surface appearance.
- Roof problems are especially prone to weeping from above and will remain wet long after the face appears dry.
Reasoning
Rain fell today (4.7mm) following 7.0mm over the previous two days, with no consecutive dry days — the rock is saturated at the surface and deeply wet internally given the high porosity of Fell Sandstone.
Despite moderate westerly winds today (up to 29 km/h), the sheltered valley position limits effective airflow at the crag face, and with humidity around 80% and overcast skies, meaningful drying has not begun and cannot begin until a sustained dry period establishes.
With recent repeated wetting events and 62.8mm over 28 days, pore saturation is likely well above the threshold where significant strength loss occurs — climbing now risks hold breakage and permanent damage to this SSSI-designated sandstone.
Summer conditions are normally favourable but this August has been unsettled with frequent rain; the current wet spell negates the seasonal advantage entirely.
Contributing Factors
6
4.7mm fell today on top of 7.0mm over the previous two days, giving zero consecutive dry days and ensuring the rock is thoroughly wet.
62.8mm over 28 days has kept the porous sandstone repeatedly saturated, preventing deep drying between rain events.
The wooded, sheltered setting drastically reduces wind and sun exposure at the rock face, slowing evaporation compared to open crags.
Westerly wind around 20–29 km/h and temperatures of 14–18°C would aid drying at an exposed crag but are largely blocked by the valley and tree cover.
Rain is forecast on each of the next five days (totalling ~16.7mm), preventing any meaningful drying window from developing.
The west-facing aspect receives only evening sun at best, and today's 100% cloud cover eliminates any solar drying contribution entirely.
Recommendations
3
- Do not climb at Back Bowden Doors today or in the coming days — the rock is wet and the forecast offers no adequate drying window.
- Monitor conditions for a sustained dry spell of at least 3–4 days given the sheltered position and cumulative saturation before considering a visit.
- If visiting the Northumberland area, consider non-porous alternatives such as whinstone crags (e.g. Great Wanney or Crag Lough) which are less sensitive to moisture, though still check for slippery surfaces.
Do Not Climb
92%
64 days ago
Back Bowden Doors received 2.0mm of rain yesterday (Aug 16) and 4.1mm today with further heavy rain forecast this evening and throughout the coming days. The sheltered valley position and high humidity mean the porous Fell Sandstone has had no meaningful drying opportunity and is almost certainly saturated internally.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The sheltered valley setting and partial tree cover dramatically reduce airflow and sun exposure, meaning drying takes significantly longer here than at the exposed hilltop of Bowden Doors proper.
- The powerful roof problems and overhanging sections are known to weep from above after rain as water percolates through the crag top — these seepage lines can persist for days even after surface rock appears dry.
- The site is within an SSSI (Site of Special Scientific Interest) with some of the finest Fell Sandstone exposures in northern England, making damage from wet climbing especially consequential.
- Seasonal bird nesting restrictions may still be in effect in early-to-mid August — climbers should check the BMC RAD for current closures before visiting.
Warnings
3
- Climbing on wet Fell Sandstone causes irreversible hold breakage and permanent route degradation — this is an SSSI site.
- The rock surface may appear deceptively dry during brief sunny spells while remaining dangerously saturated internally.
- Heavy rain is forecast tonight and over the next three days — conditions will worsen before they improve.
Reasoning
Rain on Aug 16 (2.0mm), today Aug 17 (4.1mm with heavier rain forecast tonight), and preceding showers on Aug 9 (6.1mm) and Aug 6 (2.6mm) mean the rock has been repeatedly re-wetted with no sustained dry spell — the porous Fell Sandstone is almost certainly saturated well beyond the critical 1% threshold.
The sheltered valley position, east wind at only 12 km/h, 84% humidity today, and overcast skies provide minimal drying potential; even the brief dry window from Aug 10–15 was insufficient to fully dry the rock given the 30mm deluge on Jul 26 and subsequent re-wetting events.
With repeated wetting cycles and no adequate drying period, the sandstone is at significant risk of hold breakage and grain loosening — climbing now could cause permanent damage to this SSSI-designated crag.
Mid-August temperatures are moderate (16–17°C) which would normally aid drying, but the persistent high humidity and frequent rain this summer have kept the rock in poor condition despite the season.
Contributing Factors
6
Rain yesterday (2.0mm), today (4.1mm), and heavy rain forecast tonight (up to 2.7mm in a single hour) means the rock is being actively wetted with no drying window.
The wooded, sheltered valley drastically reduces wind exposure and solar radiation, extending drying times well beyond the 48–72 hours typically needed after moderate rain.
Humidity has averaged 73% over the past week and is 84% today, severely limiting evaporative drying from the rock surface.
The rock has been wetted on multiple occasions (Jul 26, Jul 28, Jul 31, Aug 1, Aug 3, Aug 4, Aug 5, Aug 6, Aug 9, Aug 16, Aug 17) with no sustained dry spell long enough to fully dry the porous sandstone.
The next three days forecast a further 13.8mm of rain (Aug 18–20), preventing any meaningful drying until at least Aug 22.
Temperatures around 16–17°C provide some drying potential in theory, but this is entirely negated by the high humidity and continuous rainfall.
Recommendations
3
- Do not climb at Back Bowden Doors today or in the coming days — the rock is wet and being repeatedly re-wetted.
- The earliest possible window is Aug 22 onwards, but even then assess carefully given the cumulative moisture load from weeks of intermittent rain.
- If visiting the area, consider non-porous alternatives such as whinstone crags (e.g. Great Wanney or Crag Lough) which are less vulnerable to moisture damage, though surfaces will still be slippery.
Do Not Climb
75%
65 days ago
Today saw 1.5mm of rain and the forecast shows continuous rain over the next three days (totalling ~19mm), making conditions unsuitable now and worsening through the week. Although the preceding six days (Aug 10–15) were dry and warm, today's rain has reset the drying clock, and the sheltered valley position of Back Bowden Doors means recovery will be slow.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The sheltered valley position and wooded surrounds significantly reduce airflow across the rock, meaning drying times here are substantially longer than at the exposed hilltop of Bowden Doors proper.
- The powerful roof problems are known to weep from above after rain as water percolates through the crag top — these seepage lines can persist for days even after the main face appears dry.
- Cumulative rainfall over the past 28 days (52.6mm) means the sandstone has had repeated wetting cycles, and internal moisture levels may be higher than a single dry spell would suggest.
- Seasonal bird nesting restrictions may still be in effect in August — check the BMC RAD for current closures before visiting.
Warnings
2
- Fell Sandstone loses up to 50% of its compressive strength when wet — climbing on damp rock risks permanent hold breakage and irreversible route damage.
- The roof problems at Back Bowden Doors are known to weep from above after rain; even if the main face looks dry, seepage lines on overhangs can persist for several days.
Reasoning
Today's 1.5mm rain on top of recent intermittent showers (6.1mm on Aug 9, 2.6mm on Aug 6, 6.6mm on Aug 4) means the rock has been repeatedly wetted despite the useful dry spell from Aug 10–15; the sheltered position limits how effectively that dry spell penetrated internally.
The six dry days prior to today (Aug 10–15) with moderate temperatures (17–28°C) and light-to-moderate winds would normally provide adequate drying for light rain, but the sheltered west-facing aspect and wooded setting reduce effective evaporation, and today's rain has now re-wetted the surface.
With 52.6mm over 28 days and repeated wetting-drying cycles, the Fell Sandstone's iron oxide holds are at elevated risk of grain loosening; climbing now or in the coming wet days could cause permanent hold damage.
Mid-August is typically a reasonable climbing window, but this unsettled spell with below-average temperatures (12–17°C) and high humidity is slowing drying and extending the risk period.
Contributing Factors
6
1.5mm of rain today has re-wetted the rock surface, negating much of the drying benefit from the preceding six dry days.
Rain is forecast every day from Aug 17–20 totalling ~19mm, meaning conditions will worsen significantly before any recovery can begin.
The wooded, sheltered valley position severely limits wind-driven evaporation compared to exposed crags, extending required drying times well beyond standard guidelines.
Temperatures of 13–19°C over the coming days provide some evaporative potential but are insufficient to compensate for continuous rain and high humidity.
Aug 10–15 were completely dry with warm temperatures up to 28.8°C, which would have allowed significant drying of deeper moisture from earlier rain events.
52.6mm over the past 28 days from multiple rain events means the sandstone has been subjected to repeated wetting cycles, potentially maintaining elevated internal moisture.
Recommendations
3
- Do not climb today or in the coming days — the forecast shows rain through Aug 20, and the sheltered crag will need at least 48–72 hours of dry weather after the last rain before conditions are suitable.
- The earliest realistic opportunity is Aug 22 or later, assuming Aug 21 stays dry as forecast — check updated forecasts and visually assess the base of the crag for dampness before committing.
- If visiting the area, consider that the more exposed Bowden Doors proper may dry faster, but the same caution applies to all Fell Sandstone venues during this wet spell.
Climbing Outlook